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CVE-2025-62231

Published: October 30, 2025Last modified: November 5, 2025

Description

A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.

Severity score breakdown

ParameterValue
Base score7.3
Attack VectorLOCAL
Attack complexityLOW
Privileges requiredLOW
User interactionNONE
ScopeUNCHANGED
ConfidentialityHIGH
Integrity impactLOW
Availability impactHIGH
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTSxorg-serverFixed (21.1.20-r0)
25 LTSxorg-serverFixed (21.1.20-r0)
Streamxorg-serverFixed (21.1.20-r0)

References

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